APA (7th ed.) Citation

Wolff, R. P. (1979). Introductory philosophy. Prentice-Hall.

Chicago Style (17th ed.) Citation

Wolff, Robert Paul. Introductory Philosophy. Englewood Cliffs, N.J.: Prentice-Hall, 1979.

MLA (9th ed.) Citation

Wolff, Robert Paul. Introductory Philosophy. Prentice-Hall, 1979.

Warning: These citations may not always be 100% accurate.